Trap for waste-pipes



(No Model.)

N. BARRY, Jr.

TRAP FOR WASTE PIPES.

Patented Oct. 3, 1882.

N. Pnzns Phnlmlihcgnphnn Walhinglcn, Dv C.

NI'IE STATES AIEN'I" Price.

NICHOLAS BARRY, JR, OF MUSGATINE, IOWA.

TRAP FOR WASTE-PIPES.

SPECIFICATION forming part of Letters Patent No. 265,372, dated October 3, 1882.

Application filed March 27, 1882.

To all whom it may concern:

Be it known that I, NIoHoLAs BARRY, Jr., of the city of Muscatine, in the county of Muscatine and State of Iowa, have invented certain new and useful Improvements in Traps for .Vaste-Pipes; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing, and to the letters of reference marked thereon, which form part of this specification.

The drawing represents a vertical section of an S-trap with my invention applied.

This invention relates to an improvement on traps for waste-pipes; and the nature ofmy invention consists in atrap of S shape, which is constructed with a downwardly-flaringvent arranged directly over the inverted curve and adapted to have attached to it a vent-pipe for carrying off the foul gases, as will be hereinafter explained.

The following description of my invention, when taken in connection with the annexed drawing,will enable others skilled in the art to understand it.

Traps for waste-pipes havingthe well-known 8 form have been provided with vent-pipes by cutting a hole through the highest part of the inverted curx e and inserting a pipe,whieh pipe was secured in place by a lead joint which had to be wiped. This plan was not only expensive, but a roughness was necessarily left on the inside of the trap at the very point where there should not be the least obstruction-to the 5 flow of water and substances through the trap. I cast or form the improved S-shaped trap (N0 model.)

with a short vent, A, and arrange this vent as nearly over the water-seal as practicablethat is to say, the vent is located at the highest point of the inverted curve. The vent is made to flare downwardly, so that the diameter of the trap at the point indicated by the vertical dotted line Bis greater that at any other point ofthe trap. I therefore effectually prevent the lodgment of filth and other substances at said point.

It will be seen that the vent A is ofsufficient length to prevent anyobstruction being formed by thejoint where the waste-pipe is attached to it.

O designates the inlet of the trap, D the outlet, andE the well-known trap screw or plug.

This invention is applicable to traps known as S, one-halfS, three-quarter S, 850., and not only acts as a vent, but prevents siphonage, thus always preserving the water-seal in its proper place.

Having described my invention, I claim- The new article of manufacture consisting of the trap for waste-pipes, formed entire, and having a deep vertical chamber at B, a downwardly-flarin g vent, A, an inflowpassage, 0, an outflow-passage, I and a screw-tapped collar, all constructedsubstantially in the manner and for the purposes described.

In testimony that I claim the foregoing as my own I aflix my signature in presence ot'two witnesses.

NICHOLAS BARRY, J R.

Witnesses:

. D. M. LAMBERT,

GEO. W. SMALLEY. 

